Jesus Leonardo with a credit voucher for $6 that he earned in his “work” at an OTB parlor in Midtown Manhattan.

During his glorious run, Mr. Leonardo, 57, has not placed a single bet.

“It is literally found money,” he said on a recent night from his private winner’s circle. He spends more than 10 hours a day there, feeding thousands of discarded betting slips through a ticket scanner in a never-ending search for someone else’s lost treasure."